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Formal Hypothesis Test

We want to test the claim that the Smith method of gender selection is effective in increasing the likelihood that a baby will be born a girl. In a random sample of 80 couples who use the Smith method, it is found that among the 80 newborn babies, there are 35 girls.

What should we conclude about the claim?

Why is it necessary to go through all the steps of a formal hypothesis test?

Solution Summary

This Solution discusses why it is necessary to follow all steps in a formal hypothesis test while also including calculations and a graphical representations.